Home / 10,121.10-15,162.93-8,488.14

Finding the Fourth Proportional to 10,121.10, 15,162.93 and 8,488.14

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Solution

The fourth proportional to 10,121.10, 15,162.93 and 8,488.14 is: 12,716.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.10 : 15,162.93 = 8,488.14 : x
  2. Step 2: Convert to fraction form
    10,121.10/15,162.93 = 8,488.14/x
  3. Step 3: Cross multiply
    10,121.10x = 15,162.93 × 8,488.14
  4. Step 4: Simplify right side
    10,121.10x = 128,705,072.65
  5. Step 5: Solve for x
    x = 128,705,072.65/10,121.10
  6. Step 6: Final answer
    x = 12,716.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.